Hair loss affects millions globally, with causes ranging from genetics to autoimmune disorders. Androgenetic alopecia (pattern baldness) is the most common type, impacting 50% of men over 50 and 30% of women post-menopause (Journal of Investigative Dermatology, 2023). However, sudden hair loss may signal thyroid dysfunction, iron deficiency, or stress-induced telogen effluvium.
How Dermatologists Diagnose Hair Loss
- Scalp biopsy: Identifies scarring alopecia or inflammatory conditions.
- Blood tests: Checks for thyroid hormones, ferritin, and vitamin D.
- Trichoscopy: Magnifies hair follicles to assess density and structure.
Evidence-Based Treatments
- Minoxidil: FDA-approved topical solution to stimulate growth.
- Platelet-Rich Plasma (PRP): Injections to boost follicle activity.
- Nutritional counseling: Addressing deficiencies in iron, zinc, or biotin.
Myth vs. Fact
- Myth: Wearing hats causes baldness.
- Fact: Genetics and hormones are primary drivers—not headwear.